Video image storage device

Claim 2

A video image storage device, comprising: an image signal input means converting image signals in input video signals having various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of digital signals when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means.

Claim 3

A video image storage device according to claim 1, wherein the signal output means is connected to an external memory means.

Claim 4

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signals memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the frame memory means consists of a plurality of frame memories; and any of the frame memories are outputting image signals which have been memorized while the remaining frame memories are performing memorizing function of image signals.

Claim 5

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signals memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the frame memory means consists of a plurality of frame memories; and any of the frame memories are outputting image signals which have been memorized while the remaining frame memories are performing memorizing function of image signals.

Claim 6

A video image storage device according to claim 1, wherein the frame memory means consists of a plurality of frame memories; and any of the frame memories are outputting image signals which have been memorized while the remaining frame memories are performing memorizing function of image signals.

Claim 7

A video image storage device according to claim 1, wherein the input timing generating means comprises: an N-multiplying circuit including an oscillator which generates N-multilpied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the basic system clock signals are arbitrarily determined by the N value of the dividing circuit based upon the relation between effective image period and blanking period.

Claim 8

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversions; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the input timing signal generating means comprises: an N-multiplying circuit including an oscillator generating N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the N value of the dividing circuit is determined by dividing the periods of horizontal synchronizing pulses of input video signals by the oscillating frequency of the sampling clock pulses of input video signals from signal sources so that the periods of basic system clock signals is optimized by the N value.

Claim 9

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversions; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the input timing signal generating means comprises: an N-multiplying circuit including an oscillator generating N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the N value of the dividing circuit is determined by dividing the periods of horizontal synchronizing pulses of input video signals by the oscillating frequency of the sampling clock pulses of input video signals from signal sources so that the periods of basic system clock signals is optimized by the N value.

Claim 10

A video image storing device according to claim 1, wherein the input timing signal generating means comprises; an N-multiplying circuit including an oscillator generating N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the N value of the dividing circuit is determined by dividing the periods of the horizontal synchronizing pulses of input video signals by the oscillating frequency of the sampling clock pulses of input video signals from signal sources so that the periods of basic system clock signals is optimized by the N value.

Claim 11

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the various types of scanning lines of various video signals include: different scanning line numbers/frame; scanning lines containing equalizing pulses; scanning lines without equalizing pulses; interlace scanning; non-interlace scanning; and scanning lines having different image area in a horizontal scanning line.

Claim 12

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the various types of scanning lines of various video signals include: different scanning line numbers/frame; scanning lines containing equalizing pulses; scanning lines without equalizing pulses; interlace scanning; non-interlace scanning; and scanning lines having different image area in a horizontal scanning line.

Claim 13

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of digital signals when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the various types of scanning lines include: different scanning line numbers/frame; scanning lines containing equalizing pulses; scanning lines without equalizing pulses; interlace scanning; non-interlace scanning; and scanning lines having different image area in a horizontal scanning line.

Claim 14

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of digital signals when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means, wherein the various types of scanning lines include: different scanning line numbers/frame; scanning lines containing equalizing pulses; scanning lines without equalizing pulses; interlace scanning; non-interlace scanning; and scanning lines having different image area in a horizontal scanning line.

Claim 15

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory mean to the signal output means in accordance with signals from the output timing signal generating means, wherein the signal output means outputs signals to any of: a laser printer; an ink printer; a thermal printer; a video screen image recording camera; an X-ray television unit; and an image display unit for signal transmission in a hospital.

Claim 16

A video image storage device comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory mean to the signal output means in accordance with signals from the output timing signal generating means, wherein the signal output means outputs signals to any of: a laser printer; an ink printer; a thermal printer; a video screen image recording camera; an X-ray television unit; and an image display unit for signal transmission in a hospital.

Claim 17

A video image storage device according to claim 1, wherein the signal output means outputs signals to any of a laser printer; an ink jet printer; a thermal printer; a video screen image recording camera, an X-ray television unit; and an image display unit for signal transmission in a hospital.

Claim 18

A video image storage device according to claim 6 or 7, wherein the N value is calculated by the following equation; N=[Th/Ts] where brackets are Gaus symbols to make N an integer, N is sampling clock pulse numbers in one horizontal scanning line, Th is oscillating periods of horizontal synchronizing pulses and TS is pulse periods of sampling clock signals.

Claim 19

A video image storage device, comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means. wherein the input timing generating means comprises: an N-multiplying circuit including an oscillator which generates N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the basic system clock signals are arbitrarily determined by the N value of the dividing circuit based upon the relation between effective image period and blanking period; wherein the N value is calculated by the following equation: N=A+B wherein N is sampling clock pulse numbers in one horizontal scanning line, A is clock pulse numbers in desired image area and B is clock pulse numbers in non-image area.

Claim 20

A video image storage device, comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of analog signals in the frame memory means by digital-to-analog conversion when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means. wherein the input timing generating means comprises: an N-multiplying circuit including an oscillator which generates N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the basic system clock signals are arbitrarily determined by the N value of the dividing circuit based upon the relation between effective image period and blanking period; wherein the N value is calculated by the following equation: N=A+B wherein N is sampling clock pulse numbers in one horizontal scanning line, A is clock pulse numbers in desired image area and B is clock pulse numbers in non-image area.

Claim 21

A video storage device, comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of digital signals when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls a signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means; wherein the input timing generating means comprises: an N-multiplying circuit including an oscillator which generates N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the basic system clock signals are arbitrarily determined by the N value of the dividing circuit based upon the relation between effective image period and blanking period; wherein the N value is calculated by the following equation: N=A+B wherein N is sampling clock pulse numbers in one horizontal scanning line, A is clock pulse numbers in desired image area and B is clock pulse numbers in non-image area.

Claim 22

A video storage device, comprising: an image signal input means converting image signals in input video signals which may have any one of various types of scanning lines into digital image signals by analog-to-digital conversion; a frame memory means memorizing the converted image signals; a signal output means outputting the memorized image signals in the form of digital signals when required; an input timing signal generating means which generates sampling clock signals synchronized with horizontal synchronizing pulses of the input video signals; an output timing signal generating means which causes the frame memory means to output the memorized image signals; and a frame memory control means which controls a signal memory function of the image signals from the signal input means to the frame memory means in accordance with signals from the input timing signal generating means and controls signal output function of the image signals from the frame memory means to the signal output means in accordance with signals from the output timing signal generating means; wherein the input timing generating means comprises: an N-multiplying circuit including an oscillator which generates N-multiplied sampling clock signals of the horizontal synchronizing pulses of the input video signals; a low pass filter which passes signals of lower frequencies than predetermined frequencies; and a phase comparator synchronizing with the phase of the horizontal synchronizing pulses by comparison with the horizontal synchronizing pulses by dividing the sampling clock pulses output from the oscillator by means of a dividing circuit; wherein the basic system clock signals are arbitrarily determined by the N value of the dividing circuit based upon the relation between effective image period and blanking period; wherein the N value is calculated by the following equation: N=A+B wherein N is sampling clock pulse numbers in one horizontal scanning line, A is clock pulse numbers in desired image area and B is clock pulse numbers in non-image area.